Physics

Dimensional analysis is about checking that an equation makes physical sense by tracking what units (or dimensions) each quantity carries. Here, you'll express voltage $V$ and current $I$ in terms of fundamental dimensions—mass, length, time, and charge—then multiply them together to see if you get the same dimensions as power (energy per unit time). It's a quick way to catch algebra mistakes and understand why formulas work.

Dimensional analysis is about checking that an equation makes physical sense by tracking what units (or dimensions) each quantity carries. Here, you'll express voltage $V$ and current $I$ in terms of fundamental dimensions—mass, length, time, and charge—then multiply them together to see if you get the same dimensions as power (energy per unit time). It's a quick way to catch algebra mistakes and understand why formulas work.